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PRODUCTS/Flow Meter/ VA 550 - Thermal mass flow sensor for flow measurement

VA 550 - Thermal mass flow sensor for flow measurement

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Flow meters for compressed air and other technical gases

Reduce your energy costs and increase your sustainability with the VA 550. Monitor your consumption and analyze your leakage flows with just one measuring device. Due to its design, it is also ideal for mobile measurements.

Advantages at a glance:

  • All wetted parts are made of stainless steel, especially for applications with high demands on cleanliness and surface quality
  • Rough industrial applications can be realized due to robust aluminum housing
  • Recommended for flammable gases such as natural gas, hydrogen, biogas, etc. due to ATEX or DVGW approval
  • Measurement of mass flow rate, direct output of standard volume flow rate
  • Highly accurate at small as well as large flows
  • Pressure and temperature compensated by the thermal mass flow principle
  • Quick and easy installation via a standard ½'' ball valve
  • No moving parts, therefore low maintenance
  • Vanishingly low pressure loss due to vanishingly low blockage of the diameter

Technical details of the VA 550 flow meter

  • 04...20 mA, Pulse and a Modbus RTU (RS 485) interface as standard, optional interfaces like Modbus TCP (Ethernet), PoE and M-Bus available
  • Pressure resistance up to 100 bars
  • Temperature range up to 180°C
  • Protection class IP 67
  • Integrated display for a visualization of the measured values
  • Can be used from DN 20 to DN 2000, larger diameters on request
  • Easy installation under pressure
  • Settings adjustable via the keys of the display
  • Main counter reading can be reset via the display
  • For velocities up to 224 Nm/s
  • Highly accurate with an accuracy of ± 1.5% or ± 1% of m.v. as well as ± 0.3% of f.s.
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Flow Meter with Measuring Section - VA 570

VA 570 - Thermal mass flow meter for consumption measurement

ATEX approval for hazardous areas and DVGW approval for use in natural gas.

Flow Meter with Modbus Interface - VA 500

VA 500 - Flow meter for compressed air and gases

RS 485 interface, Modbus RTU, 4...20 mA analogue output for m³/h, Pulse output for m³.

Mass Flow Meter - VA 520

VA 520 - Thermal mass flow meter for flow measurement

for compressed air and gases. New digital electronics - improved accuracy.

M-Bus flow meters for compressed air, natural and industrial gas

M-Bus - Industrial gas meter

State-of-the-art industrial gas meter with M-Bus for compressed air, natural gas, biogas and many other applications.


The CS Instruments product portfolio includes measuring devices for numerous applications in compressed air and gas measurement. Both small industrial companies and large OEM customers, for example from the automotive industry, rely on our reliable measuring instruments made in Germany and are fully supported by our worldwide dealer and partner network.

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